AAC BLACKOUT 51T 5.56x45 NATO Muzzle Brake 1/2-28 $69.99 $219.99 SKU: AAC64132 Quantity: 1 2 3 4 No-hassle 14-day returns share Description Constructed with aerospace-grade heat-treated 17-4 stainless steel and Nitride coated for high surface hardness and durability. Specifications SKU AAC64132 Recommended Products Allen Company Molded Ear Plugs with Cord in Portable Case - Yellow $3.99 More Info Add to Cart AAC Blackout 18T 5.56x45 NATO Muzzle Brake 1/2-28" $69.99 $219.99 More Info Add to Cart Maglula BabyUpLULA .22LR to .380ACP single-stack without a projecting side pin Black $24.99 $39.99 More Info Add to Cart NcSTAR Optics & Accessories Two Point Tactical Sling in Tan $14.99 More Info See Options